DE69733473T2 - NEEDLE TIP PROTECTION FOR SUBCUTANE INJECTIONS - Google Patents

Abstract

This invention is a needle tip protective device (22). In one embodiment the needle tip protective device (22) includes a needle guard (41) that is slidably mounted on a hypodermic needle (10) having a needle tip (11) located at the distal end of the needle (10). The needle guard (41) contains a movable needle trap (41) that is biased against or toward the hypodermic needle (10). The needle trap (41) advances over the tip (11) of the needle, entrapping the needle tip (11) as the needle guard (41) is urged forward near the sharpened distal end of the hypodermic needle (10). A tether (24), or other limiting means, limits the forward movement of the needle guard (41) along the needle (10). In one embodiment, the needle guard is manually urged forward along the shaft of the needle by the user. In yet another embodiment, a spring, or other biasing means (19), is used to move the needle guard (41) along the shaft of the needle (10).

Description

Technical part

The The present invention relates generally to protective devices for the Tips of hypodermic needles.

General state of the technology

The Occurrence of the human immunodeficiency virus (HIV) with the increasing frequency of other blood-borne ones Pathogens such as the hepatitis B virus (HBV) and the hepatitis C virus (HCV) provides one for health care workers previously unknown in modern medicine professional risk The risk of contracting HIV through a needlestick injury to infect 1 to 250, but for those who are living with HIV as a result of a needlestick injury the risk becomes 1 to 1. The risk of infection with the stronger contagious HBV as a result of a needlestick injury is in the range from 1 to 6 to 1 to 30. There are also more than twenty hematogenous pathogens, which over transmit the blood and body fluids become. The presence of any of these pathogens in patients poses for the employees of health care a risk if invasive procedures are used. Infectious diseases are now behind heart disease and cancer the third most common Cause of death, reflecting the growing need for subcutaneous equipment even higher Safety underlines. Ten years ago were infectious diseases as the fifth most common Categorized cause of death, and now they are in third place. These Increase in infectious diseases is mainly due to the excessive use of antibiotics and increasing availability attributed to reusable, hollow needle subcutaneous equipment.

There The total number of infected people is increasing, and more People treated by health workers, causing continued the possibilities for disease transmission from the patient to the health care worker. Also, the use of disposable hypodermic equipment has one annual Increase of approximate 7% up.

In addition, everywhere is on a considerable one in the world Number of concurrent patient-patient transfers in healthcare facilities been found. morning Data suggest that inappropriate infection control techniques make a direct contribution to this increase. This includes the improper use of subcutaneous equipment, Drug vials for Multiple dosing and failure of the Change of protective gloves and equipment for each new patient.

Recent studies mention also the detection of significant blood contamination on the brackets reusable blood collection tubes, which routinely for the removal used by blood from different patients. It is common practice a holder for the suction tubes along with 100 blood collection tubes to be shipped. It is likely that in the future too new ways of disease transmission be found. The health care workers are running increasingly Risk of disease transmission, and the sisters lead the majority of invasive subcutaneous procedures such as injecting medicines, taking blood and that Insertion of venous (IV) infusion catheters. Sisters and other healthcare workers are injured routinely through the exposed sharp lancet of the cannula after its use at one Patients. The critical time in which a percutaneous injury can happen, from the moment in which the cannula from the Patients or the venous access is pulled out by the time where the contaminated cannula safely put aside.

It gives approximate in the US 5.6 million workers whose jobs put them at risk of contracting a random one Suspend needlestick injury. The medical literature mentions that every year nearly one million are recorded in the USA Needlestick accidents occurs, assuming that there are another two-thirds not recorded accidents gives. A million injuries a year means on average a needlestick injury every thirty-two seconds. Before the erratic Increase in HIV and serum hepatitis became a needle stick injury regarded as a routine act of patient care. A needlestick injury has a life-threatening risk today, and that Employee of health care need to be with each day live this horror.

Subcutaneous cannulas become in a wide variety of medical invasive procedures used, with annual Approximate base 12 billion units are consumed. Basically, that is size A plurality of hypodermic needles for intended for single use on a single patient, and they are in a sterile state in a variety of lengths and Diameters provided. Subcutaneous cannulas usually go down a one-time use in a specially constructed puncture resistant, disposed of biologically safe container.

Find hypodermic needles in medicine, in science, in veterinary medicine, in biotechnology and the pharmaceutical industry, but also in the chemical industry use. The use in the Medicine and veterinary medicine involves the injection of drugs or diluents into a patient or venous access, the removal of blood, body fluids or samples of Patients and the preparation of medicines. To the applications in of biotechnology and pharmacy is mainly research, where substances, Liquids, Gases or compounds through a membrane or barrier in inject a sample or controlled area mixed therein or be taken from it. The applications in the chemical Industry includes injecting or withdrawing substances, Liquids, gases or compound in a sample or controlled area into or out of these. In every single case, regardless whether medical or industrial, exposed cannulas make one Danger of the user being injured.

In The medicine comes to the risk of contact with contaminated blood or contaminated body fluids In addition, highly reactive or toxic substances for chemotherapy or for therapeutic Purposes are used. In biotechnology, in the pharmaceutical and chemical industry become toxic, highly reactive, corrosive acting materials or substances in a variety of experiments or projects combined or removed.

In spite of all obvious dangers associated with dealing with exposed cannulas related, and the availability of manually operated Safety devices for subcutaneously cannulas dominate in the market unprotected exposed hypodermic needles still. This is on the usual Practice in the industry back respectively, where exposed hypodermic needles sold at discount prices and along with other medical equipment and Shipping goods be packed. Medical facilities keep buying exposed hypodermic needle in this way simply for economic reasons.

The A fundamental problem with many of today's safety subcutaneous devices is that they are for it are provided, operated by hand to become, or in the language of industrial medical technology, that they consider as "active" devices become. You can quite protective shields, retractable cannulas, movable protective covers or the like, but they generally demand that the User an additional Operation executes, so that the safety mechanism comes into effect. Even if already a number of devices are available in which the cannulas are inserted into the Syringe are sunk, but are related to the production costs These devices are so high that they are hardly affordable.

The patent US 5,147,327 discloses a hypodermic needle having a retractable tubular sleeve slidably mounted on and movable with respect to its forward end between a rearward and retracted position which exposes the forward end of the cannula and a forward guard position which is the forwardmost The end of the cannula encloses. In one embodiment, a spring inside the sheath pushes the sheath into the forward guard position, thereby enclosing the forward end of the cannula. The patent US 5,147,327 does not provide, as in the present invention, a cannula securing device which includes a moveable cannula holder which is urged towards said cannula, said cannula holder receiving the ground distal end of said cannula when said distal end of said needle securement advances moved toward said ground distal end of said cannula and releasably coupling said cannula fuse to said proximal end of a catheter hub; Limiting means for limiting the axial movement of said cannula fuse; and an approach comprising a cannula receptacle for receiving the proximal end of said cannula.

What needed is an inexpensive subcutaneous device with universal usability.

Presentation of the invention

It Accordingly, it is an object of this invention to provide a cannula tip securing device which effectively delivers the sharpened distal tip the cannula shields after their use.

A Another object of this invention is to provide a safety subcutaneous device which are inherently automatic and / or semi-automatic a serving offers, is safe from incorrect operation and intended for single use is.

A Still another object of this invention is to provide a safety subcutaneous device to ask, which is similar looks like a standardized, exposed, disposable and hypodermic needle Device (i.e., the cannula and the cannula tip be before the execution of the subcutaneous procedure).

Yet Another object of this invention is to provide a safety hypodermic device to put, which in agreement with existing procedures for the aspiration of drugs located in a syringe and the administration of injections and an unrestricted Access to the vessels or allows the insertion of catheters. Yet another object of this invention is to provide a safety subcutaneous device ready to put, which is an exposed ground point for the Contemplation of bevel cut cannulas offers.

Yet Another object of this invention is to provide a safety subcutaneous device to provide, which automatically and / or manually the sanded Tip of the cannula encloses after use or picks up.

One Another object of this invention is to provide a safety subcutaneous device to provide, which allows that drugs or diluents be sucked into a syringe without the safety mechanism automatic and / or manual wrapping is activated prematurely.

Further Objects and advantages of this invention will become apparent from the following Description clearly if they are associated with the accompanying Pictures is read. Brief description of the drawings

1 Figure 11 shows a complete side view of a prior art subcutaneous cannula attached to a hub.

2 is a front view of the in 1 illustrated approach of the hypodermic needle.

3A is a complete side view of the in 1 illustrated approach of the hypodermic needle.

3B is a full plan view of the in 1 illustrated approach of the hypodermic needle.

4 is a sectional view of the in 1 illustrated approach of the hypodermic needle.

5 Figure 4 is a complete side view of an approach for use with the present invention.

6 is a sectional view of the in 5 presented approach.

7 is a sectional view of the in 5 illustrated approach, which has a flange portion for holding a removable enclosure.

8th is a complete side view of the in 7 shown approach with the addition of a projection for the engagement of a removable enclosure.

9 is a full back view of the in 7 illustrated cannula approach.

10 is a full front view of the in 7 presented approach.

11 Figure 4 is a full front view of a cannula securing assembly for use with the present invention.

12 is a full front view of the in 11 illustrated cannula securing arrangement.

13 and 14 show a cannula securing device for use with an embodiment of the present invention.

15 shows a cannula holder which is biased against or towards the hypodermic needle; not according to the invention.

16 shows a non-inventive cannula, which is enclosed within a cannula securing arrangement

17 illustrates a cannula holder in an embodiment of the present invention.

18A - 18C . 19 and 20 illustrate a cannula hub for use with the present invention.

21A - 21C illustrate several configurations of retrofitted cannula approaches.

22A shows a complete side view of a lug attached to a cannula attachment of the prior art.

22B is a sectional view of the part of 22A ,

23 is a sectional side view of an adapter for an intravenous catheter according to the prior art.

24 Fig. 10 illustrates a hub portion that may be attached to a blood collection device.

25 is a side sectional view of a previously filled approach a syringe cartridge.

26 - 28 do not represent the invention because the cannula has no profile change.

29 and 30 illustrate a cannula securing assembly for use with the present invention.

31 Fig. 10 is a graph showing the interaction between a resilient member and a sliding member with no notch for the cannula securing.

32 Figure 11 is a graph showing the interaction between a resilient member and a sliding member with a notch for the cannula lock.

33 and 34 Figure 4 shows a complete side view of a cannula attachment for use with the present invention.

35 - 40 show an attachment part with a cannula, which has a change in its contour.

41 - 43 illustrate a catheter having no profile change.

44 - 46 show a sectional view of the present invention.

47 - 51 illustrate a side loadable cannula fuse in one embodiment of the present invention.

52 and 53 show a cannula securing assembly for use in a catheter.

54 - 55 show a cannula holder in an embodiment of the present invention.

56 is a complete plan view of a housing.

57 shows a sectional view and a cutaway view of a catheter insertion device in an embodiment of the present invention.

58A C show an isometric view of a catheter in one embodiment of the present invention.

59 and 60 show a cannula holder device for use in a catheter.

61 and 62 illustrate a cannula backup in yet another embodiment of the present invention.

detailed description

It will now be described a protective device for a cannula tip. In the following description numerous special details are shown thus a complete one understanding the present invention allows becomes. However, one skilled in the art will recognize that the invention can be realized without these specific details can. Otherwise, well-known structures and processing steps have not been shown in great detail to improve the intelligibility of the present invention not unnecessary to impair. It should be additional be noted that over This discussion is referred to a variety of Devices with hypodermic needles such as fillable Syringes, prefilled Syringes, prefilled Cartridge syringes, blood collection devices and catheters. It understands However, that itself does not affect the present invention limited these devices is and can be used in any application where it is he wishes is, a protective cladding at the tip of a cannula or any other elongate object.

It It must also be borne in mind that the here in relation to an intravenous catheter revealed invention of cannula serving easily Can be adapted to all types of other catheters, where one cannula can be used, including, without limited to this neurological, urological, central venous catheters, Oximetry Catheters, Thermodilution Catheters, PTCA Catheters, PTA Catheters, Angiography, atherectomy, electrophysiology catheter, suction catheter and catheters for the Wound drainage, cardiovascular, lungs and spinal catheters. The example described here using a cannula casing The invention can also be easily attached to a cannula for taking blood or to any other cannulas adapted to invasive procedures in angiography, Cardiovascular surgery, ophthalmology, orthopedics, Dental Medicine, Veterinary Medicine, used in chemotherapy and arterial blood gas, without limitation to be.

1 is a complete side view of an exposed standard hypodermic needle 10 of the prior art. It has a sharpened cannula tip at the distal end 11 on, while the opposite or proximal end of the cannula 10 at an approach 12 is attached, which on indicates: at least one flange 1 at the outer proximal end for attachment of the cannula attachment 12 at the end of the fitting of a luer syringe, a cannula holder 4 at the distal end of the cannula attachment 12 for fixed attachment of the cannula 10 and a certain number of ribs 2 at the cannula holder 4 ,

2 is a full front view of the neck 12 the subcutaneous cannula of the prior art. This approach includes: a channel which provides a pathway to the hypodermic needle for the liquid or gas, a cannula receptacle 4 , in it the hypodermic needle 10 can be firmly attached, this cannula recording 4 from a certain number of ribs 2 surrounded, and a certain number of flanges 1 ,

3A is a complete side view of the approach 12 the subcutaneous cannula of the prior art, this approach 12 comprising: at least one flange 1 for attachment of the cannula attachment 12 at a plug end of a luer fitting, a cannula holder 4 for fixed attachment of the (not shown here) cannula and a certain number of ribs 2 , 3B is a complete plan view of the approach 12 the subcutaneous cannula of the prior art, this approach 12 comprising: at least one flange 1 for attachment of the cannula attachment 12 at a plug end of a luer fitting, a cannula holder 4 for fixed attachment of the (not shown here) cannula and a certain number of ribs 2 , 4 is a full sectional view of the in 2 presented approach 12 a subcutaneous cannula of the prior art along the axis 4-4. It shows an attachment part 12 comprising: a channel providing a path to the hypodermic needle (not shown) for the fluid or gas, a cannula receptacle 4 for firmly attaching the hypodermic needle (not shown) 10 and a certain number of ribs 2 ,

5 Figure 4 is a full side view of the neck portion for use with the invention. It shows: an approach 112 the hypodermic needle, comprising: at least one flange 101 for attaching the cannula attachment 112 at the end of a luer fitting, a (not shown here) cannula receptacle 104 for fixed attachment of the cannula (not shown in this figure), an internal channel which provides a path between the needle hub for the liquid or the gas 112 and the cannula (not shown) creates a projection 5 located at the distal end of the cannula attachment 112 is located, wherein the projection with the extended side wall portion 15 at the distal end of the cannula attachment 112 connected, and one with a finger surface 27 provided movable latch arm 26 , which at the cannula attachment 112 by means of a joint section 23 is attached, wherein the movable latching arm 26 a lead 21 to a component in a releasable position at the cannula attachment 112 to hold on, and said movable latching arm 26 is shown in the preferred molded position.

6 is a sectional view of a side view of the in 5 illustrated cannula approach 112 , This cannula attachment 112 contains an inner channel which provides a path between the needle hub for the liquid or gas 112 and the (not shown) cannula creates. The arrow "M" indicates the direction of movement of the pawl 26 at.

7 is a sectional view of a side view of the in 5 illustrated cannula approach 112 which is a paragraph 16 for releasably retaining a removable sheath over the hypodermic needle.

8th is a complete side view of the in 7 presented approach 112 which at least one projection 14 which has subsequently been added to the paragraph 16 is located, said projection 14 can come into firm contact with a removable shell. The lead 14 is positioned in communication with a portion of the removable sheath for contact to facilitate attachment of a hypodermic needle to or removal from a connector. The approach 112 Also contains a tab or an extension 17 with a cap shape or a holding means 18 to install a flexible hitch.

9 is a full back view of the in 7 illustrated cannula approach 112 ,

10 Figure 4 is a full front view of the disclosed approach showing: an approach 112 a hypodermic needle with an extended wall area 15 , a channel which provides a path to the hypodermic needle (not shown) for the liquid or gas, a cannula receptacle 104 for fixed attachment of the (not shown) cannula, a projection 5 , which can be used as a guide to align with another component, a paragraph 16 for releasably holding a removable sheath over the hypodermic needle (not shown), a projection 14 , which subsequently follows the paragraph 16 and serves to come into firm contact with a corresponding component of a removable sheath (not shown) and one with a finger surface 27 provided movable latch arm 26 , which at the cannula attachment 12 by means of a (not shown) hinge portion 23 is appropriate.

11 is a complete front view of a cannula securing arrangement 22 at the front of the neck 112 attached and comprising: a guide opening 47 with a subcutaneous cannula passing through it 10 , wherein said opening 47 is created by the fact that the unfolded areas of the cannula securing arrangement 22 at a slot line 43 be folded together, a lead 5 which serves as a guide for aligning the cannula securing arrangement 22 at the beginning 112 is used, whereby an opening on the cannula securing arrangement 22 is created when the unfolded areas of the cannula securing arrangement 22 be folded, a paragraph 16 for releasably retaining a removable sheath over the hypodermic needle 10 , a lead 14 which follows the paragraph 16 is in order to come into firm contact with a corresponding component of a removable sheath (not shown). In one embodiment, the cannula backup contains 22 also a movable latching arm, the cannula attachment 112 is attached by a hinge section. A flexible hitch (not shown) is generally used to secure the cannula 22 firmly at the beginning 112 to install.

12 is a full front view of the in 11 illustrated cannula securing arrangement 22 comprising: a guide opening 47 , which is created by the fact that the unfolded areas of the cannula securing arrangement 22 at the slot line 43 be folded together, a recess 25 with a lead 44 at the rear or inner end of the recess 25 , a flexible hitch 24 , which with a joint section 28 and a hole in the joint portion is connected.

13 Figure 11 is a full front view of the cannula securing assembly shown in an unfolded configuration. It shows a cannula securing arrangement 22 comprising: a hinge portion 28 connecting each area, a slot line 43 where the areas abut one another, a guide opening 47 in each area, one recess 25 in an area which has a projection 44 for connecting to the corresponding element 144 in the other area of said cannula securing arrangement 22 has a movable cannula tip fuse 41 and a prop 36 to the areas of the cannula securing arrangement 22 to join together.

14 Figure 11 is a full rear view of the cannula securing assembly shown in an unfolded configuration. It shows a cannula securing arrangement 22 comprising: a hinge portion 28 connecting each area, a slot line where the areas abut one another, a guide opening 47 in every area, a head start 44 for joining with the corresponding element 144 in the other area of the cannula securing arrangement 22 , a portable cannula tip safety device 41 , at least one support or projection 36 at a portion of the cannula securing assembly which fits into at least one corresponding slot 47 in the other area of the cannula securing arrangement 22 engages to secure the areas together.

15 is a sectional side view showing the interaction of the cannula securing assembly 22 with the resilient part 19 and the hypodermic needle 10 and the ground cannula tip 11 represents. It shows a movable cannula securing arrangement 22 with a subcutaneous cannula passing through it 10 , wherein the resilient part 19 the cannula securing arrangement 22 towards the distal end of the hypodermic needle 10 suppressed. The cannula securing arrangement 22 has a movable cannula tip fuse 41 with a joint area 40 on, wherein said cannula tip fuse 41 molded in such a way that the cannula tip safety 41 an inherent biasing force towards the hypodermic needle 10 having another biasing force on the cannula tip fuse 41 by the deflecting force of the resilient part 19 is exercised, whereby said cannula tip securing 41 into the corresponding recess 31 is inserted when said cannula tip fuse 41 over the sharpened cannula tip 11 moved out, said cannula tip fuse 41 sliding with said hypodermic needle 10 comes into contact. The cannula backup 22 becomes at a neck element 12 by means of a flexible hitch 24 fastened as described and noted in the preceding drawings.

16 is a sectional side view showing the container of the ground cannula tip 11 within the cannula securing arrangement 22 shows. This illustration includes: a cannula securing assembly 22 with a subcutaneous cannula passing through it 10 wherein said cannula securing arrangement 22 by the deflecting force of a resilient part 19 over the distal end of the hypodermic needle 10 and the sharpened cannula tip 11 is pushed out, making the movable, self-exciting cannula tip fuse 41 the cannula securing arrangement 22 in front of the sharpened cannula tip 11 moved, the sanded cannula tip 11 inside the cannula securing arrangement 22 and behind the inherently impervious cannula tip fuse 41 a joint section 40 having. In addition, the deflecting force of the resilient member presses 19 the cannulas top security 41 inwardly into a covering position, said resilient part 19 both the cannula securing arrangement 22 as well as the outer wall of the cannula securing arrangement 41 surrounds and the cannula tip retainer 41 is held in an enclosed protective position by a force acting in the radial direction. In the protected enclosed position, the cannula tip safety device penetrates 41 into the corresponding recess 31 the cannula securing arrangement 22 a, whereby a movement is prevented and a secure housing of the ground cannula tip 11 inside the cannula securing arrangement 22 is guaranteed. The cannula backup 22 is attached to a lug or housing by means of a flexible hitch, as described and noted in the preceding drawings.

17 is a sectional side view of a cannula securing arrangement 22 comprising: a cannula tip fuse 41 with a joint section 40 which is connected to the cannula securing arrangement 22 connected is. The aforementioned cannula tip fuse 41 is shaped in a self-tensioning manner, as shown, and can be moved to an open and a closed position. Said cannula tip securing means may comprise a substantially impermeable plastic resin and / or a substantially impermeable metal.

18A is a complete side view of the cannula hub 412 for use with the invention. It shows: from a hypodermic needle the cannula attachment 412 , a flange 401 for attaching the cannula attachment 412 at the end of a Lüer fitting, a cannula holder 404 for firmly attaching the cannula, a certain number of ribs 402 and a surface 75 for attaching another component to the neck 412 ,

18B is a full plan view of the in 18A illustrated cannula approach 412 comprising: a flange 401 for attaching the cannula attachment 412 at the end of a Lüer fitting, a cannula holder 404 for firmly attaching a cannula, a certain number of ribs 402 and a surface 75 for attaching another component to the batch 412 ,

18C is a sectional view of a side view of the in 18A illustrated cannula approach 412 with a flange 401 for attaching the cannula attachment 412 at the end of a luer fitting, a cannula holder 404 for firmly attaching the cannula 10 , with a channel leading therethrough, which for the liquid or the gas a way from said approach 412 to said cannula 10 produced, a certain number of ribs 402 and a surface 75 for attaching another component to the batch 412 ,

19 is a complete side view of the approach 412 the hypodermic needle with a flange 401 for attaching the approach 412 the hypodermic needle at the end of a luer fitting, a cannula receptacle 404 for fixedly attaching the cannula, at least one or even a certain number of shortened ribs 403 and a surface 75 for attaching another component to the neck 412 ,

20 is a full front view of the in the 18A and 19 shown part and shows: an approach 412 a hypodermic cannula with a channel which provides a pathway to the hypodermic needle for the liquid or gas 10 generated, a cannula holder 404 which adjacent at least one or a certain number of ribs 402 or 403 or a certain number of flanges 401 and a surface 75 having.

21A is a complete side view of a retrofitted attachment part 215 which is firmly attached to an attachment part 412 is attached by means of a heat shrink connection. The mentioned approach part 215 has an annular flange 16 for connection to a protective case for storage and a projection 17 for attaching a flexible hitch, said projection 17 an opening for insertion has attachment or attachment of the flexible hitch and said projection 17 has an angled proximal end to preclude any possibility that the flexible hitch at the projection 17 gets stuck when the cannula backup 22 is activated. An attachment part 215 also contains a recess or pocket 18 so that a flexible hitch can be accommodated in a non-interfering manner therein, as well as a locking means 77 for the releasable holding of said cannula fuse 22 in a locked position in close proximity to said attachment part 215 ,

21B is a full front view of the in 21A presented approach 215 and shows: the approach 215 the hypodermic needle, comprising: an opening having a number of slots and correspondingly fitting the distal end of a hypodermic hub, as shown throughout this application, said slots defining the rib or ribs 402 from the mentioned approach 412 take up, an annular flange 16 , a lead 17 for attaching a flexible hitch or the like, a recess or pocket 18 for removably accommodating therein a flexible hitch or the like, and an arre animal medium 77 which is an opening 78 for releasably holding said cannula fuse 22 in a locked position in the immediate vicinity of said attachment part 215 having.

21C is a full front view of the in 21A shown retrofitted attachment part and shows the attachment part 215 the hypodermic needle has an opening which fits in a corresponding manner on the distal end of a hypodermic cannula approach represented throughout this application, and an annular flange. A slot is shown at the opening and at least one slot is needed around the cannula hub 412 and the attachment part 215 to attach together so that the attachment part 215 and the cannula attachment 412 remain aligned when a circumferential force is exerted on the adjacent components.

22A is a complete side view of the attachment 15 , which firmly at the cannula attachment 12 of the prior art, which comprises: at least one flange 1 for attaching the cannula attachment 12 at the end of a luer fitting, a heel 16 for releasably holding a protective storage case (shown in other drawings of this application) 54 over the hypodermic needle 10 , one at the distal end of the attachment 15 located projection 5 , wherein said projection 5 with the attachment part 15 at the distal end of the neck area 15 connected and the paragraph 16 one shoulder 14 for the twisted attachment of said invention to said storage enclosure, and one having a finger panel 27 provided movable latching arm 26 , which at the attachment part 15 through a joint section 23 is attached, said finger field 27 has at least one projection to on the said finger field 27 to create a better grip or contact. The finger field 27 may also be different in color or have a glossy color, which serves as a visual indicator to the user, about the finger field for manually releasing said cannula securing assembly 22 or the like can easily locate, with the movable latch arm 26 a lead 21 to a component in a releasable position in the immediate vicinity of said attachment part 15 to lock, said movable latching arm 26 is shown in the preferred trained position.

22B is a sectional side view of the attachment part of 22A and shows the attachment part 15 using a cannula neck 12 of the prior art, said neck portion 12 at least one flange 1 for attaching the cannula attachment 12 at the end of a Lüer fitting and on one side a cannula holder 4 for fixedly attaching the cannula (not shown), said cannula receptacle 4 at least one rib 2 or a certain number of ribs 2 and an inner channel defining a path for the liquid or gas between the cannula attachment 12 and the cannula is generated. It shows how the approach 12 of the prior art is retrofitted with the invention, wherein said attachment means comprise a friction weld, an ultrasonic weld, a heat weld or mechanical fasteners, such as by the projection 64 which is fastened by means of a snap closure or a frictional closure, said cannula receptacle 4 a recess or a slot which is made so that he / she said projection 64 of the attachment part 15 receives, said part of the approach 15 a lead 5 which is located at the distal end of the attachment part 15 located and with the distal end of the attachment part 15 connected, and said approach part 15 also a paragraph 16 for removably attaching a protective storage case (not shown) and said shoulder 16 also includes means for creating a tortuous path to prevent contamination from entering the sterile area by enclosing the cannula 10 , the cannula fuse 22 and the neck part 15 inside a protective storage case is generated. The attachment part 15 includes a movable latch arm or lever 26 , which at the attachment part 15 by means of a joint section 23 is attached, wherein the movable latching arm 26 a finger field or button 27 has and a projection 21 for holding a component in a releasable holding position adjacent to the attachment part 15 , wherein said latch arm 26 also a lead 49 to the latch arm 26 bias to the outside when a compressive force on the releasably held cannula fuse 22 is exercised, said movable latching arm 26 in the preferred position for retaining at least one component in a locked position at the neck 12 the hypodermic needle is shown.

23 is a sectional side view of a venous infusion catheter 29 in the prior art, which includes a catheter attachment portion 9 with a section 18 for removable attachment of a protective storage case, a fixed subcutaneous cannula 10 and a slip-on section 78 for releasably attaching a neck 13 a venous infusion catheter.

24 illustrates an approach part 15 which can be attached to a blood collection device.

25 is a sectional side view of a pre-filled syringe cartridge of the prior art, which is a glass cartridge 6 and a glass cartridge neck 68 comprising a cannula receptacle 4 for firmly attaching a cannula 10 with a ground distal end 11 , wherein said approach 68 also a threaded section 67 having. 26 is a sectional view of a plan view in which the releasably held cannula securing arrangement 22 close to the mentioned approach area 15 is releasably held and said fuse arrangement 22 through the compressed in the resilient part 19 stored energy stored can be moved, this resilient part 19 at the mentioned cannula fuse 22 through the notch or notch 60 is held displaceably and the movable needle holder 41 an insertion area 33 has, to the said resilient part 19 at the mentioned cannula fuse 22 in the notches 60 and or 61 housing said cannula holder 41 also at least one notch or notch 61 for releasably holding said end coils of said resilient member 19 and said cannula fuse 22 Comprising: a proximal guide section 34 , a distal cannula guide opening 47 , a cannula holder 41 which is under tension with the said hypodermic needle 10 comes into contact with the inherent storage of the trained configuration of said cannula holder 41 and / or by the deflecting force of the surrounding resilient member 19 whereby the forward movement of said cannula securing 22 by a permanently attached flexible hitch (not shown) 24 is limited, said cannula 10 a ground distal end 11 and a non-abraded proximal end which is fixed to said approach 12 is appropriate. The named cannula holder 41 is articulated on the aforementioned cannula fuse 22 through a joint section 40 attached, said cannula securing 22 a receiving slot 31 for receiving the needle holder 41 and a distal cannula guide opening 47 having. 27 is a sectional view of a top view like 26 and contains the in 26 described elements, wherein the removably held cannula securing arrangement 22 against the distal end of the hypodermic needle 10 by the deflecting force of the resilient part 19 is pressed and a cannula holder 41 which is under tension with said hypodermic needle 10 comes into contact with the inherent storage of the trained configuration of said cannula tip fuse 41 and / or by the deflecting force of the surrounding resilient member 19 whereby the forward movement of said cannula securing 22 is limited by a fixed flexible hitch (not shown). The named resilient part 19 is at the mentioned cannula backup 22 through the notch or notch 60 slidably held, wherein the movable needle holder 41 an insertion area 33 for the insertion of said resilient member 19 at the mentioned cannula fuse 22 in the notches 60 and or 61 and said cannula holder 41 also at least one notch or notch 61 for releasably holding said end coils of said resilient member 19 having. The named cannula holder 41 is articulated on the aforementioned cannula fuse 22 through a joint section 40 attached, and said cannula backup 22 has an integral metal fuse 75 and a distal cannula guide opening 47 on. The named cannula fuse 41 also has a tapered or decreasing proximal cross-section 304 for unobstructed attachment of the movable resilient part 19 on. The named resilient part 19 is movable in an annular manner over or around the proximal portion of said cannula securing means 22 positioned.

28 is a sectional view of a plan view of the parts 26 and 27 and shows the cannula tip 11 as they are inside the cannula backup 22 through the movable cannula securing 41 is included. It shows a hypodermic needle 10 with a polished tip 11 , wherein said cannula securing 22 movably mounted on said attachment portion by means of a limiting flexible hitch (not shown), the resilient member 19 is extended and a deflecting force on the cannula securing arrangement 22 whereby said cannula securing means is prevented from moving further forward by the limiting effect of said limiting flexible hitch, said cannula securing means 22 only one notch 60 has, so that said resilient part 19 a deflecting force on said cannula securing 22 exercises and said cannula backup 22 with the aid of the guide sections on the hypodermic needle, which are shown throughout this application 10 remains aligned. The mentioned proximal guide 34 is shown here as it is the cannula backup 22 in a substantially concentric manner on the named hypodermic needle 10 holds. The named cannula fuse 41 also has a tapered or decreasing proximal cross-section 304 for the purpose of unobstructed Aufsteckens the movable resilient member 19 on.

29 is a complete inner front view of one half of the cannula securing assembly 22 incorporating the elements of the present invention and the cannula securing 22 in their trained configuration shows. This includes one foldable, open-sided cannula securing 22 with a joint section 28 for attaching a separate flexible hitch with adjacent surfaces 39 which provide an opening when said cannula securing arrangement 22 is composed, with a slot or cavity 25 is created when the areas of cannula securing 22 be joined, with a distal guide section 47 is created when the areas of cannula securing 22 be joined together, said cannula fuse 22 a corresponding slot or opening 31 for receiving said cannula holder 41 and said cannula holder has at least one rib 36 and a corresponding opening 37 so that the said areas of cannula protection 22 held around the hypodermic needle by friction, said pin 36 and the slot 37 on each side of the mentioned areas of cannula securing 22 can be positioned and said cannula backup 22 an inner guide cross section 35 and a proximal guide cross section 34 with a cavity or void 38 between the mentioned guides 34 and 35 and said cannula holder has an inner landing 53 which is located between said inner guide 35 located and said pier 52 an adjacent pier 53 which serves to guide said hypodermic needle during assembly, storage and use, said jetty 53 also mentioned abraded cannula tip in the interior of said cannula fuse 22 receives. The named cannula fuse 22 is fixed to a separate flexible hitch (not shown) on the hinge section 28 appropriate. 30 is a sectional view of the in 29 illustrated cannula fuse 22 along the axis 30 - 30. It shows a cannula fuse 22 , a slot line 43 , a guide section 35 , wherein this guide section 35 chamfered or angled ends for aligning a hypodermic needle within this guide section 35 on the mentioned cannula fuse 22 during the process of assembly, wherein said hypodermic needle 10 (shown in other drawings of this application) adjacent to the dock 52 is housed.

31 Figure 11 is a graphical representation illustrating the interaction between a resilient member and a sliding member, said sliding member being on an elongated shaft, this sliding member having a movable arm which is urged away from said resilient member by a deflecting force wherein said movable arm is movably keyed between the diameter of said resilient member and said shaft, said arm slidably contacting said shaft and where another surface of said resilient member is positioned about said sliding member and said resilient member is releasably retained by said movable arm on said sliding member, said resilient member having a portion of said sliding member within the inner diameter of said resilient member, whereby the binding force of said spring the part on said sliding part and said movable arm occasionally exceeds the deflecting force of said resilient part when said resilient part expands. This deflecting force of said resilient member is greatest when said resilient member is fully compressed and, conversely, said deflecting force of said resilient member is weakest when said resilient member is fully expanded. The binding force of said resilient member on said movable arm is strongest when said resilient member is compressed.

32 Figure 11 is a graphical representation illustrating the interaction between a resilient member and a sliding member, said sliding member being on an elongated shaft, this sliding member having a movable arm which is urged away from said resilient member by a deflecting force wherein said movable arm is movably keyed between the diameter of said resilient member and said shaft, said arm slidably contacting said shaft and where another surface of said resilient member lies in a notch or recess on the shaft said sliding member is mounted and said resilient member is releasably retained by said movable arm and said notch on said sliding member, said resilient member having a portion of said sliding member within the inner diameter of said resilient member, whereby the binding force of said resilient member on said sliding member and said movable arm is always less than the deflecting force of said resilient member as said resilient member expands. This deflecting force of said resilient member is exerted on the surface provided by said notch, maintaining a greater deflecting force on said sliding member and said movable arm than said binding force of said resilient member. The said movable arm is pushed inwards from the retaining position when said sliding part projects forward beyond the end of said shaft moved out, whereby the hold on the said resilient member is released.

33 is a complete side view of the lug component 12 , It shows an approach 12 a hypodermic needle with a flange 101 for attaching the cannula attachment 12 at a plug end of a luer fitting, a cannula holder 4 , a paragraph 16 for removably holding a protective sheath for storage over a hypodermic needle (not shown), one at the distal end of the hub 15 located projection 5 , this approach part 15 at least one opening 89 for inserting an adhesive-carrying fastener or the like, to allow adhesive to be applied to the cannula during assembly, said opening 89 also provides an aerating means to allow the pressurized air to enter during the insertion of a cannula 10 with adhesive in said cannula receptacle 4 escapes, said projection 5 with the attachment part 15 at the distal end of the attachment 15 connected, said paragraph 16 a shoulder for twisted attachment to a storage case and one with a finger pad 27 provided movable latch arm 26 having, which by a hinge portion 23 at the attachment part 15 is attached, said finger field 27 has at least one projection to the said finger field 27 to create a more favorable grip or contact, this finger field 27 may also be different in color or may have a light color, which serves as a visual indicator for the user to the finger field 27 for manually releasing a cannula securing arrangement or the like, easily locating the movable latching arm 26 a lead 21 having a component in a releasable position adjacent to said attachment portion 15 is held, said movable latching arm 26 is shown in the preferred trained position. 34 is a complete side view of the lug component 12 , It shows an approach 12 a hypodermic needle with a flange 101 for attaching the cannula attachment 12 at a plug end of a luer fitting, a cannula holder 4 , a paragraph 16 for removably holding a protective sheath for storage over a hypodermic needle (not shown), one at the distal end of the hub 15 located projection 5 , this approach part 15 at least one opening 89 for the insertion of an adhesive-carrying attachment or the like., Thus, during assembly adhesive on the cannula 10 can be brought, said opening 89 also represents a ventilation opening to allow during insertion of a cannula 10 air under pressure with adhesive in said cannula receptacle 4 escapes, said projection 5 with the attachment part 15 at the distal end of the attachment 15 and the said paragraph 16 one shoulder 14 for the twisted attachment to a storage case and a movable Einklinkarm 26 having, which by a hinge portion 23 at the attachment part 15 is attached, wherein the movable latching arm 26 a lead 21 comprising a component in a releasable position adjacent to said attachment portion 15 to hold on, said movable latching arm 26 is shown in the preferred trained position. 35 is a sectional side view of the approach, as he attached to a pre-filled glass syringe 6 of the prior art, which is a pick-up bead 7 and a hypodermic needle 10 with a distal ground end 11 wherein said cannula 10 a profile change 3 near the distal end for limiting the axial movement of a slidable cannula fuse 22 relative to the cannula tip 11 after positioning the cannula securing at the distal end of the cannula 10 having. 35 further shows a neck body 15 , which at the mentioned syringe 6 at the reception pearl 7 through the attachment section 65 is appropriate; said attachment body 15 has one at the distal end of said attachment part 15 located projection 5 on, with this projection 5 with the distal end of the attachment part 15 is connected and said attachment body 15 also a paragraph 16 for removably attaching a protective storage case, a movable latch arm or lever 26 , the attachment body 15 through a joint section 23 is mounted, wherein said lever 26 a touchpad 27 , a lead 21 for holding a component in a releasable position on the attachment part 15 and said Einklinkarm 26 also a lead 49 to push said latching arm outwardly when a compressive force on the releasably held cannula fuse 22 (shown in other drawings of this application) is exercised, said movable latching arm 26 in the preferred position for retaining at least one component in a locked position on the neck portion 15 is shown.

36 is a sectional side view of the approach to an approach 8b a prefilled cartridge syringe is firmly molded, which is a permanently attached cannula 10 with a sharpened proximal end 111 and a sharpened distal end 11 wherein said cannula 10 a profile change 3 near the distal end for limiting the axial movement of a sliding cannula fuse relative to the cannula tip 11 after the positioning of said cannula securing at the distal end of the cannula 10 having the ground proximal end 111 for piercing the plug of a Me drug or liquid cartridge is used. The approach contains an integral part of the approach 15 which is a cannula holder 4 having; the mentioned approach part 15 has one at the mentioned approach part 15 located projection 5 on, wherein said attachment part 15 also a paragraph 16 for detachably attaching a protective flexible storage case and a movable latch arm or lever 26 at the mentioned approach part 15 that at the attachment part 15 through a joint section 23 is attached, wherein the movable latching arm 26 a projection 21 for holding a component in a releasable position on the attachment part 15 and said Einklinkarm 26 also a lead 49 has, thus the Einklinkarm 26 is pushed outward when a compressive force on the releasable held cannula fuse 22 is exercised, said movable latching arm 26 in the preferred position for retaining at least one component in a locked position on the neck portion.

37 is a sectional side view of a mounted on a pre-filled cartridge syringe of the prior art approach 8a , which is a permanently attached cannula 10 with a ground proximal end 111 and a ground distal end 22 wherein said cannula 10 a profile change 3 near the distal end for limiting axial movement of a sliding cannula fuse (not shown) relative to the cannula tip 11 after the positioning of said cannula securing at the distal end of the cannula 10 wherein said ground proximal end 111 for piercing the plug of a drug or liquid cartridge is used. The approach contains an attachment part 15 which firmly adheres to said syringe attachment 8a at the cannula holder 4 is appropriate; the mentioned approach part 15 has one at the mentioned approach part 15 located projection 5 on, wherein said attachment part 15 also a paragraph 16 for removably attaching a protective storage case and one having a touch pad 27 provided movable latch arm or lever 26 having, which at the attachment part 15 through a joint section 23 is attached, wherein the movable latching arm 26 a lead 21 for holding a component in a releasable position on the attachment part 15 and said Einklinkarm 26 also a lead 49 to the latch arm 26 to push to the outside, if a pressure force on the releasable held cannula fuse 22 is exercised, said movable latching arm 26 in the preferred position for retaining at least one component in a locked position on the neck body 15 is shown.

38A is a sectional side view of a delivery device of a venous infusion catheter with a neck portion 9 comprising: a fixed cannula 10 with a ground distal end, said cannula 10 a profile change 3 near the distal end for limiting axial movement of a sliding cannula fuse (not shown) relative to the cannula tip 11 after the positioning of said cannula fuse 22 at the distal end of the cannula 10 has a section 18 for removably attaching a protective storage envelope, a hypodermic needle 10 , which is almost at a cannula holder 4 is appropriate; said catheter attachment portion 9 is retrofitted with the present invention, wherein the attachment part 15 firmly on said catheter attachment portion 9 at the reception 4 through the attachment section 66 is attached, said attachment part 15 also a paragraph 16 for removably attaching a protective storage case.

38B is a sectional side view of a molded on an insertion device of a venous infusion catheter approach, which comprises: a neck 9 , a hypodermic needle 10 which are attached to a cannula holder 4 is firmly attached, said cannula 10 a ground distal end 11 and said cannula 10 a profile change 3 near the distal end for limiting axial movement of a sliding cannula fuse (not shown) relative to the cannula tip 11 after the positioning of said cannula securing at the distal end of the cannula 10 having; an attachment part 15 , this approach part 15 one at the mentioned approach part 15 located projection 5 and said attachment body 15 also a paragraph 16 for attaching a protective storage case and a movable latch arm or lever 26 , the one at the neck part 15 by means of a joint section 23 is attached, wherein the movable latching arm 26 a lead 21 for holding a component in a releasable position on the attachment part 15 and said Einklinkarm 26 also a lead 49 to the said latch arm 26 to push outwardly when a compressive force is applied to the releasably held cannula fuse, said movable latch arm in the preferred position for retaining at least one component in a locked position on the hub portion 15 is shown.

39 is a sectional side view of a neck, which is threaded on the neck 68 a glass cartridge is mounted, said glass cartridge approach 68 firmly on the glass cartridge 6 appropriate and the approach mentioned 68 a cannula holder 4 for fixed attachment of a cannula 10 wherein said cannula 10 a ground distal end 11 and said cannula 10 a profile change 3 near the distal end for limiting the axial movement of a sliding cannula fuse relative to the cannula tip 11 after the positioning of said cannula securing at the distal end of the cannula 10 , wherein said approach 68 also a threaded section 67 with which the attachment body on said glass cartridge approach 68 through the threaded section 67 is attached; said attachment body 15 has one at the distal end of said attachment part 15 located projection 5 on, with said projection 5 with the distal end of the attachment part 15 is connected and said attachment body 15 also a paragraph 16 for removably attaching a protective storage case and one having a touch pad 27 provided movable latch arm or lever 26 having, which at the attachment part 15 through a joint section 23 is attached, wherein the movable latching arm 26 a lead 21 for holding a component in a releasable position on the attachment part 15 wherein said latch arm 26 also a lead 49 to the latch arm 26 to push to the outside, if a pressure force on the releasable held cannula fuse 22 (shown in other drawings of this application) is exercised, said movable latching arm 26 in the preferred position for retaining at least one component in a locked position on the neck body 15 is shown.

40 is a sectional side view of a neck, which is fixed to a glass cartridge 6 is attached and includes: an approach 68 with a cannula holder 4 for fixed attachment of a cannula 10 wherein said cannula 10 a ground distal end 11 and said cannula 10 a profile change 3 near the distal end for limiting the axial movement of a sliding cannula fuse relative to the cannula tip 11 after the positioning of said cannula fuse 22 at the distal end of the cannula 10 having; an attachment part 15 , which is inseparable from the said glass cartridge approach 69 is poured on; the mentioned approach part 15 has one at the distal end of said attachment part 15 located projection 5 on, with said projection 5 with the distal end of the attachment part 15 is connected and said attachment body 15 also a paragraph 16 for removably attaching a protective storage case and one having a touch pad 27 provided movable latch arm or lever 26 having, which at the attachment part 15 through a joint section 23 is attached, wherein the movable latching arm 26 a lead 21 for holding a component in a releasable position on the attachment part 15 and said Einklinkarm 26 also a lead 49 to the latch arm 26 to push to the outside, if a pressure force on the releasable held cannula fuse 22 (shown in other drawings of this application) is exercised, said movable latching arm 26 in the preferred position for retaining at least one component in a locked position on the neck body 15 is shown.

41 is a sectional view of a plan view of an embodiment with an indwelling catheter 29 which has a movable cannula securing 22a and a detachable venous infusion catheter 29 wherein said catheter 29 firmly attached to a catheter hub 13 is appropriate; an approach 9 has a fixed hollow hypodermic needle 10 with a ground distal end 11 on, said cannula 10 firmly attached to an attachment 15 attached, which is a paragraph 16 for removably attaching a protective storage envelope, wherein a sliding cannula securing 22a by means of a limiting flexible hitch 24 firmly on said attachment part 15 attached, said flexible hitch 24 slidable through an opening in said approach 9 is attached and said cannula fuse 22a a projection or finger rest 80 so that said separable catheter 29 and said cannula backup 22a along the said hypodermic needle 10 be moved forward so that said catheter 29 can be introduced into a blood vessel, said subcutaneous cannula 10 by a guide opening in said movable cannula securing device 22a can slide and said cannula backup 22a a movable needle holder 41 with a corresponding slot 31 for receiving the needle holder 41 when said cannula holder 41 over the cannula tip 11 moved out, and said cannula backup 22a an open collar or disc 30 for retaining the resilient part 19 at the proximal end of said cannula securing 22a and said resilient part 19 sliding on the mentioned cannula fuse 22a through the notch or notch 60 is held, said movable needle holder 41 an insertion area 33 for inserting said resilient member 19 on the mentioned cannula fuse 22a in the notches 60 and or 61 and said cannula holder 41 also a notch or notch 61 for holding said end windings of said resilient member 19 having the distal end of said cannula securing 22a a plug-in section 78 for releasably attaching egg nes approach 13 a venous infusion catheter and said cannula holder 41 a movable arm 45 and a protection 42 for releasably retaining a catheter hub 13 from said plug-in section 78 after insertion of the catheter 29 in a patient. The catheter approach mentioned 13 has at least one flange 301 and an inner channel, depression, slot or undercut 32 on to from the said moving arm 42 to be kept releasable. The named moving arm 42 could also contain a metal part, which during or after the production of said plug-in section 78 is used. The named channel 32 may have an annular or segmented configuration.

The mentioned approach part 15 can also be the latch arm 26 which is illustrated in other drawings of this application, otherwise said cannula securing 22a before use adjacent to said attachment part 15 be kept releasably by means of friction or wedge action means. The disclosed invention is in 103 presented in a ready for use state.

42 is a sectional top view, which shows how the cannula tip 11 the catheter insertion device in the cannula fuse 22a is pulled back. The catheter 29 and the catheter approach 13 remain releasably held adjacent to said cannula fuse 22a while the cannula 10 from the catheter insertion site through the distal guide 47 the said cannula backup 22a is pulled back. This drawing shows the named cannula fuse 22a as they are inside a casing or casing 85 is held. Such a housing 85 has an inner chamber for receiving a resilient part 19 and a sliding cannula securing device 22a on, wherein said housing 85 also outer projections 86 which serve as a sliding gripping means, said projections 86 extend in the longitudinal direction, in the radial direction or the like. And may have any surface or contour, which the user holding on said housing 85 improve. The named housing 85 can also have an inner projection 88 for fixed attachment of said cannula fuse 22a in the interior of said housing 85 and inner ribs 97 for the concentric arrangement of said resilient member 19 in the interior of said housing 85 exhibit. The named cannula fuse 22a is inside the said case 85 held by a snap fastener which passes through the wedge 66a and a slot 66b at the proximal end of said cannula securing 22a is formed. The named housing 85 has a corresponding opening for receiving said wedge 66a and slits 66b on, said opening being an introduction 96 for easy installation of said fuse 22a in said housing 85 having. The said housing may also have an inner ring or at least one projection 88 which, in a corresponding manner of a slot 89 in said cannula backup 22a is recorded. The named slot 89 and the lead 88 can either at the fuse 22a or on the case 85 be arranged.

The mentioned sliding cannula fuse 22a is firmly attached to an attachment using a limiting flexible hitch 24 attached, said subcutaneous cannula 10 through a proximal guide opening 34 in said movable cannula fuse 22a can slide and said cannula backup 22a a movable needle holder 41 with a corresponding slot 31 for receiving the needle holder 41 has, when said holder 41 over the cannula tip 11 moved out, said cannula fuse 22a a notch or notch 60 for releasably holding the said resilient member 19 on the mentioned cannula fuse 22a and said movable cannula holder 41 an insertion area 33 for inserting the said resilient part 19 on the mentioned cannula fuse 22a in the notches 60 and or 61 and said cannula holder 41 also a notch or notch 61 for holding said end windings of said resilient member 19 having the distal end of said cannula securing 22a a plug-in section 78 for releasably attaching a neck 13 a venous infusion catheter, and said cannula holder 41 a movable arm 45 and a lead 42 for releasably retaining a catheter hub 13 from said plug-in section 78 after insertion of the catheter 29 in a patient. The catheter approach mentioned 13 has at least one flange 301 and an inner channel, depression, slot or undercut 32 on to from the said moving arm 45 and to be releasably held to said projection. The named moving arm 45 could also contain a metal part, which during or after the production of the plug-in section 78 is used.

The mentioned approach part 15 can also be the latch arm 26 which is illustrated in other drawings of this application, otherwise said cannula securing 22a before use adjacent to said attachment part 15 be kept releasably by means of friction or wedge action means.

43 is a sectional view and cutaway plan view of the movable Kanülensi insurance 22a on an embodiment with an indwelling catheter 29 , It shows how the cannula tip 11 safe inside the cannula fuse 22a is held, the arm 45 and the lead 42 moved in a corresponding manner inwards and with the cannula holder 41 to be activated including some different versions of the components: the said storage case 24 is firmly on the housing 85 attached, said housing 85 has at least one longitudinally extending and non-sliding projection 86 on, said housing has a distal projection 90 on top of the said cannula backup 22a can snap when the said cannula backup 22a in the interior of said housing 85 located, said cannula backup 22a has a slot line 43 on, the said projection 42 has a (...?) shape. The shape of the projection 42 is not limited to a one-sided or two-sided surface, but could be oval, round, radial, smooth, or rough, or a combination of any of the surfaces described herein.

44 Figure 5 is a sectional and cutaway side view of the present invention as applied to a male end of a luer fitting and fully showing the hypodermic needle 10 which is a profile change 3 near the distal end for limiting the axial movement of a sliding cannula fuse 22 relative to the cannula tip 11 after the positioning of said cannula fuse 22 at the distal end of the cannula 10 having; she shows: an approach 12 with a fixed cannula, a means for holding a separate movable cannula fuse 22 , wherein said cannula securing 22 an opening therethrough for said hypodermic needle 10 whereby the cannula securing 22 in a ready to use position on said approach 12 held, said captive cannula fuse 22 away from the cannula approach 12 by a compressed springy part 19 is pressed and the resilient part 19 between the mentioned approach 12 and said cannula backup 22 is arranged and said resilient part 19 also in an annular manner, which forms part of said cannula backup 22 surrounds, is arranged.

The named approach 12 indicates a channel through which a path to the said hypodermic needle for the liquid or gas 10 is created, a flange 101 for attaching the cannula attachment 12 at one end of the luer syringe, a cannula holder 4 for firmly attaching the cannula 10 , this cannula 10 a ground distal end 11 and a non-abraded proximal end which firmly on said approach 12 appropriate, and an integral part of the approach 15 who has a lead 5 which extends at the distal end of said attachment body 15 is located, said projection 5 with the attachment part 15 is connected and said approach part 15 also a paragraph 16 for releasably attaching a protective storage case and one having a touch pad 27 provided movable latch arm 26 having, which at the attachment part 15 by means of a joint section 23 is attached, wherein the movable latching arm 26 a lead 21 for holding a component in a releasably locked position on the attachment part 15 wherein said latch arm 26 also a lead 49 for pretensioning the latching arm 26 outwardly when a compressive force on the releasably held cannula fuse 22 is exercised; and a movable cannula fuse 22 which has a proximal guide section 34 , a distal cannula guide portion 47 and a movable cannula holder (not shown in this view) 41 , a receiving slot 31 for holding the needle holder, a retention area 44a with an opening 48 for receiving said projection 21 wherein said cannula fuse 22 a compressed springy part 19 which at the proximal end of said cannula securing 22 is arranged, wherein the resilient part 19 a deflecting force on said cannula securing 22 exerts; if the said cannula backup 22 through the hook 21 of the movable latching arm 26 at the mentioned approach part 15 releasably held in a compressed position, an opening for aligning said cannula securing arrangement 22 adjacent to the mentioned attachment part 12 , the approach projection 5 positioned through the opening, said latch arm 26 a lead 49 for taking the aforementioned cannula fuse 22 when said cannula backup 22 in the direction of the mentioned approach part 12 is pressed, seizes the aforementioned cannula fuse 22 grabs the lead 49 and moves manually said Einklinkarm 26 to the outside, thereby ensuring that said latching arm 26 moves outward releasing the holder on the cannula securing device 22 ,

45 is a sectional view and cutaway top view of the part of the 44 and contains the in 106 The illustrated and described elements, wherein the (in a partially cutaway view shown) releasably held cannula securing arrangement 22 adjacent to the mentioned attachment part 15 is releasably held, said fuse arrangement 22 can be moved by the stored energy in the compressed resilient part 19 is stored, said resilient part 19 sliding on the mentioned cannula securing 22 by the score or Einker advertising 60 and said movable needle holder 41 an insertion area 33 for inserting said resilient member 19 on the mentioned cannula backup 22 in the notches 60 and or 61 , wherein said cannula holder 41 also at least one notch or notch 61 for releasably holding said end windings of said resilient member 19 and said cannula fuse 22 a proximal guide section 34 , a distal cannula guide opening 47 , a cannula holder 41 which is under tension with the said hypodermic needle 10 comes into contact with the inherent storage of the formed configuration of said cannula holder 41 and / or by the deflecting force of the surrounding resilient member 19 whereby the forward movement of said cannula securing 22 through a profile change 3 said cannula 10 is limited, wherein the cannula 10 a ground distal end 11 and a non-abraded proximal end which is fixed to said approach 12 is appropriate.

The named cannula 10 is firmly on the approach 12 in a cannula holder 4 attached, said approach 12 a flange 16 for removably attaching a protective sheath and at least one flange 101 having. The named cannula holder 41 is articulated on the aforementioned cannula fuse 22 by means of a joint section 40 attached, said cannula securing 22 a receiving slot 31 for receiving the needle holder 41 having.

46 is a sectional view and cutaway top view of the part of the 44 and 45 and shows the cannula tip 11 as they are inside the cannula backup 22 through the movable needle holder 41 is included. It shows: a hypodermic needle 10 with a polished tip 11 , wherein said cannula securing 22 in their axial movement by means of a profile change 3 near the distal end of said cannula 10 is narrowed, with the resilient part 19 is deflected and a deflecting force on the cannula securing arrangement 22 maintains, said cannula securing 22 by the limiting feature of the mentioned profile change 3 is prevented from moving further forward by the said resilient member 19 sliding on the mentioned cannula fuse 22 through the notch or notch 60 is held, said movable needle holder 41 an insertion area 33 for inserting said resilient member 19 on the mentioned cannula backup 22 in the notches 60 and or 61 and said cannula holder 41 also at least one notch or notch 61 for releasably holding said end windings of said resilient member 19 and said cannula fuse 22 comprising: a proximal guide portion 34 , a distal cannula guide opening 47 , a cannula holder 41 that is under tension with the mentioned hypodermic needle 10 comes into contact with the inherent storage of the formed configuration of said cannula holder 41 and / or by the deflecting force of the surrounding resilient member 19 whereby the forward movement of said cannula securing 22 through a profile change 3 the mentioned cannula 10 is limited, said cannula 10 a ground distal end 11 and a non-ground proximal end which is fixed to said approach 12 is appropriate. The named cannula 10 is firmly on the approach 12 in a cannula holder 4 attached, said paragraph 12 a flange 16 for removably attaching a protective sheath and at least one flange 101 having. The named cannula holder 41 is articulated on the aforementioned cannula fuse 22 through a joint section 40 attached, said cannula securing 22 a receiving slot 31 for receiving the needle holder 41 having. Here is the named proximal guide 34 pictured as they are the cannula backup 22 in a substantially concentric manner on said hypodermic needle 10 holds. The named cannula fuse 41 also has a tapered or decreasing proximal cross-section 304 for unobstructed attachment of the movable resilient part 19 on.

47 is a complete plan view of a cannula backup 22 which has a proximal guide section 34 , a decreasing cross-section 304 a longitudinally extending chamber 94 , a lead 63 to allow the free movement of a movable latch, and a distal guide section 47 , This embodiment uses a separate cannula fuse component.

48 is a full front view of the in 47 illustrated cannula fuse 22 comprising a longitudinally extending chamber 94 a slot 25 for receiving a latch means, a distal guide portion 47 and having an opening.

49 is a sectional view of the in 47 illustrated cannula fuse 22 along the axis 49-49, and shows the slotted configuration of the chamber 94 ,

50 is a full bottom view of the in 47 illustrated cannula fuse 22 which a notch 60 , a cross-section decrease 304 and a lead 63 having, which allows the free movement of a movable latch.

51 is a full back view of the in 50 illustrated cannula fuse 22 which is a chamber 94 , an opening, a notch 60 and a proximal guide portion 34 having.

52 Figure 11 is a full plan view of the cannula securing device for a catheter introducer 220 comprising: an inner chamber 94 , a proximal guide section 34 , a recess 31 for receiving a movable needle holder, a middle guide portion 93 to accommodate a cannula 10 during the operations of assembly, a slot 80 for receiving the proximal end of a separate cannula holder 41 , a slotted catheter adapter 78 , a distal guide section 92 and a lead 91 for releasably holding a catheter hub 13 in a special orientation on said cannula backup 220 ,

53 is a full front view of the in 52 illustrated and intended for a catheter introducer cannula backup 220 comprising: a middle guide section 93 to accommodate a cannula 10 during the assembly operations, a slotted catheter adapter 78 , a distal guide section 92 and a lead 91 for releasably holding a catheter hub 13 in a special orientation on said cannula backup 220 , The named cannula fuse 220 has a cannula passing therethrough, said cannula securing through said cannula 220 Through recording takes place through the separately mounted cannula holder 41 , The named cannula 10 is located through the mentioned cannula fuse 220 through concentric through the cannula holder 41 arranged.

54 is a sectional view and cutaway side view of a separate needle holder 41 which is a proximal side 82 which is inserted into a slot within the slidable cannula fuse. The cannula holder 41 contains at least one projection 83 for fixedly mounting said cannula holder in a cannula securing device, an insertion side 33 for accommodating a resilient member during assembly operations, a notch 61 for maintaining a deflecting force of said resilient member on said receptacle 41 and a certain number of sides or aprons 46 that have a ground point 11 a cannula inside said receptacle 41 to record. The named cannula holder 41 may include plastic, metal, or any other intrinsically impermeable material.

55 Figure 4 is a full plan view of the separate cannula holder intended for a syringe or blood collection device 41 , It includes: a cannula holder 41 , a certain number of aprons 46 , each of which is formed by a fold, a notch 61 , an introductory section 33 , a proximal side 82 , which is formed by a fold and a certain number of pointed projections 83 and a guide section 84 , The score 61 and the insertion area 33 are optional.

56 is a complete plan view of the housing 85 which is a lip 90 and inner ribs 97 having. The ribs mentioned 97 can be omitted by looking at the cross section of said housing 85 there is such a shape as that of the figure in the 58A -C equals the housing.

57 Fig. 3 is a sectional view and cut-away plan view of a catheter introducer comprising the components illustrated in the present invention, namely a cannula 10 with a ground distal end 11 wherein said cannula 10 a profile change 3 near the distal end of said cannula 10 and said cannula 10 stuck to an approach 9 by means of a cannula holder 4 is attached, said approach 9 a flange or a number of protrusions 16 to receive a removable storage case and said cannula 10 a cannula backup 220 which is slidable about said cannula 10 is disposed around and initially adjacent to the proximal end of said cannula 10 is arranged. The named cannula fuse 220 has a receiving slot 31 for a movable needle holder 41 a slot 80 for firmly attaching a separate cannula holder 41 , a catheter adapter 78 and a proximal guide portion 34 on. The named cannula holder 41 has a proximal side 82 on which in the slot mentioned 80 Recording takes place, a certain number of pointed protrusions 83 for firmly attaching said cannula holder 41 at the mentioned cannula fuse 220 in the slot 80 into it, a deflection arm 45 and a lead 42 for releasably holding a catheter hub 13 adjacent to said cannula fuse 220 on, said page 82 a guide section 84 central to said cannula through said fuse 220 to store it through. Said detachable catheter 29 has an approach 13 and an inner channel, depression, slot or undercut 32 on, so that he through the said movable arm 42 is kept releasable. In this embodiment, a side load is still applied to a cannula, leaving the sensitive tip untouched and sharp.

58A . 58B and 58C show an isometric view of the in 57 described catheter when the catheter adapter 9 from the catheter 29 is separated.

59 is a complete plan view of the separate cannula holder 41 which is intended for the application of the invention to the indwelling catheter. It shows a cannula holder 41 , a certain number of aprons 46 , each of which is formed by a fold or a bend, a notch 61 , an introductory section 33 , a proximal side 82 which is produced by a fold or a bend and has a certain number of pointed projections, a guide portion 84 , a protruding edge or holding device produced by at least one fold or bend 27 and a protrusion produced by a fold or a bend 42 ,

60 is a complete and cutaway representation of the part of 59 which is a separate cannula holder 41 for the application of the invention to the indwelling catheter. It shows a cannula holder 41 , a certain number of aprons 46 , each of which is produced by a fold or bend, a notch 61 , an introductory section 33 , a proximal side 82 which is produced by a fold or bend and a certain number of pointed projections 83 has a projecting edge or holding device produced by a fold or bending 27 , a deflection arm produced by a fold or bend 45 and a protrusion produced by a fold or bend 42 ,

61 Figure 4 is a full front view of the clip-on cannula securing assembly 22a for an indwelling catheter shown in an unfolded configuration. It comprises a cannula securing arrangement 22a with a movable needle holder 41 , wherein said cannula holder 41 comprising: a deflected arm 45 and a lead 42 an inner guide section 35 , a distal catheter adapter 78 , a deflected joint section 28 with a certain number of areas of cannula backup 22a which are connected adjacent to said hinge region, said hinge region 28 an adequate area for insert molding a separate flexible hitch or for fixedly mounting said separate flexible hitch 24 having, said hinge portion 28 also an opening therethrough for fixed insertion of a separate flexible hitch 24 can have. The named cannula fuse 22a indicates: a slot line 43 where the areas of cannula securing 22a abut each other or joined together, at each area at the distal end of a guide hole 47 and a prop 36 for joining the areas of the cannula securing arrangement 22a , The named support 36 finds inclusion in a corresponding slot or opening 37 at the adjacent half of said cannula backup 22a ,

62 is a full rear view of the cannula securing assembly 22a for an indwelling catheter shown in an unfolded configuration. It comprises a cannula securing arrangement 22a which is an extended joint 28 to join each area of the cannula backup 22a having, said elongated hinge portion 28 a slot or recess for insertion of a fixed or separate flexible hitch (not shown). The named cannula fuse 22a further comprises: an inner guide portion 35 , a slot line 43 where the areas of cannula securing 22a abut each other or are connected, a proximal guide 34 and a proximal wedge protrusion 66a that is on each area of the cannula backup 22a located, a movable needle holder 41 , at least one support or projection 36 on a region of the cannula securing arrangement 22a , the or in at least one corresponding slot 37 on the other area of the cannula securing arrangement 22a is inserted to the areas of the cannula securing arrangement 22a to attach to each other. The named support 36 finds inclusion in a corresponding slot or opening 37 ,

In This application has been set forth a number of embodiments, referring to the needle protection device relate to the present invention. It is important to point out that many of the components described here may be interchangeable. It It is also important to note that the invention is a variety of embodiments which may consist of a single piece, an injection molded part, where the components are made uniform, up to a variety of components, all of which provide the desired result, namely one secure placement of the ground needle tip.

Claims (13)

Needle protection device ( 20 ), which comprises: a cannula fuse ( 22 ) which is displaceable on a cannula ( 10 ) having a proximal end and a ground distal end (US Pat. 11 ), said cannula having at least one profile change formed along its length ( 3 ) and said fuse ( 22 ) has a proximal end and a distal end and with said, on said cannula ( 10 ) profile change can come into snap-in contact to limit the way the said cannula backup ( 22 ) slidably on said cannula ( 10 ), characterized in that said fuse comprises a movable needle holder ( 41 ) directed towards the cannula between a first and a retracted configuration in which 41 ) of said cannula ( 10 ) and a second and operative configuration in which said needle holder ( 41 ) said ground distal end ( 11 ) of said cannula ( 10 is stretched, said cannula fuse ( 22 ) to the effect that, with the said profile change ( 3 ) comes into latching contact substantially at the same time when said needle holder ( 41 ) transitions from said first and deployed configuration to said second and operational configuration. A cannula protection device according to claim 1, wherein said at least one profile change ( 3 ) comprises at least one formed as a recess profile change and said cannula fuse ( 22 ) can come into latching contact with said at least one formed as a depression profile change. A cannula protection device according to claim 1, wherein said profile change ( 3 ) comprises at least one outwardly bulged side wall portion and said cannula fuse ( 22 ) may come into frictional contact with the at least one outwardly bulged side wall portion. A cannula protection device according to claim 1, wherein said profile change ( 3 ) comprises a combination of at least one profile change formed as a depression and at least one outwardly bulging side wall region, and said cannula protection ( 22 ) can come into latching contact with said at least one formed as a recess profile change and said at least one outwardly bulging side wall portion. A cannula protection device according to claim 1, wherein said profile change ( 3 ) comprises an elliptical abutment part comprising a first pair of opposing and outwardly extending side walls which are movable relative to said cannula for snap-in contact with said cannula securing means (10). 22 ), and a second pair of opposed and recessed side wall sections formed relative to said cannula. A cannula protection device according to claim 1, wherein said profile change ( 3 ) on said cannula ( 10 ) is formed as its integral part. A cannula protection device according to claim 1, wherein said profile change ( 3 ) comprises a squeezing site located on said cannula ( 10 ) is trained. A cannula protection device according to claim 1, wherein said cannula securing device ( 22 ), when said cannula trap ( 41 ) changes from said first and inserted configuration into said second and ready configuration, then with said profile change ( 3 ) comes into latching contact. A cannula protection device according to claim 1, wherein said cannula securing device ( 22 ) to the effect that, with the said profile change ( 3 ) comes into latching contact, said cannula holder ( 41 ) then transitions from the first and deployed configuration to said second and ready configuration. A cannula protection device according to claim 1, wherein said profile change ( 3 ) comprises at least one formed as a recess profile change and at least one outwardly bulging side wall portion. A cannula protection device according to claim 1, wherein said profile change ( 3 ) has a non-annular shape. A cannula protection device according to claim 2, wherein said at least one profile change (10) formed as a recess ( 3 ) one on said cannula ( 10 ) formed flattened depression. A cannula protection device according to claim 1, wherein said cannula securing device ( 22 ) with a section of the mentioned profile change ( 3 ) can come into latching contact.